The trailer starts with narration by Prince William: "Everyone knows that feeling, when life gets on top of us."
"We feel stressed, low, anxious or have trouble sleeping," he says. "We think there's nothing that can be done, nothing we can do about it," Prince Harry continues, before Meghan adds, "But now, there's a new way to help turn things around. Every Mind Matters will show you simple ways to look after your mental health."
And finally, Kate says, "It will get you started with a free online plan designed to help you deal with stress, boost your mood, improve your sleep, and feel more in control."
Glenn Close and Gillian Anderson, who have spoken out about mental health in the past, are among those who join the royals in the black and white clip.
